參數(shù)資料
型號(hào)： LM40
廠商： National Semiconductor Corporation
英文描述： Hardware Monitor with Dual Thermal Diodes and SensorPath Bus
中文描述： 硬件監(jiān)控雙熱二極管和SensorPath總線
文件頁(yè)數(shù)： 17/27頁(yè)
文件大小： 369K
代理商： LM40
2.0 Register Set
(Continued)
2.5 DEVICE ID (Addr: 000 010; 02h)
Reg
Add
Register
Name
R/
W
P
O
R
Val
Bit
15
MSb
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSb
000 010 Device ID
R
22h
RevID
0
DeviceID
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
The device ID is defined by the manufacturer of the device and is unique for each device produced by a manufacturer. Bits 15-11
identify the revision number of the die and will be incremented upon revision of the device.
Bit
10-0
15-11
Type
RO
RO
Description
DeviceID (Device ID Value)
A fixed value that identifies the device.
RevID (Revision ID Value)
A fixed value that identifies the device revision.
2.6 CAPABILITIES FIXED (Addr: 000 011; 03h)
Reg
Add
Register
Name
R/
W
P
O
R
Val
Bit
15
MSb
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSb
000 011
Capabilities
Fixed
R
21h
Reserved
0
FuncDescriptor2
0
FuncDescriptor1
0
0
0
0
0
0
0
0
0
1
0
0
0
1
The value of this register defines the capabilities of the LM40. The LM40 supports two functions, that of Temperature
Measurement type (Function 1) and Voltage-Only Measurement type (Function 2). Please refer to the SensorPath specification
for further details on other FuncDescriptor values.
2.7 DEVICE STATUS (Addr: 000 100; 04h)
This register is set to the reset value by a Device Reset.
Reg Add
Register Name
R/
W
P
O
R
Val
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LSb
000 100
Device Status
R
0h
BER
Res
0
ERF2
ERF1
Res
SF2
SF1
0
0
Bit
0
Type
RO
Description
SF1 (Status Function 1)
This bit is set by a Function Event within Function 1. Event details are function
dependent and are described within the function. SF1 is cleared by Device Reset or by handling the event
within the Temperature Measurement Function (see
Section 2.9
for further details).
0: Status flag for Function 1 is inactive (no event).
1: Status flag for Function 1 is active indicating that a Function Event has occurred.
SF2 (Status Function 2)
Same as SF1 for Function 2, Voltage-Only Measurement Function. (see
Section
2.10
for further details)
Reserved.
Will always read "0".
ERF1 (Error Function 1)
This bit is set in response to an error indication within Function 1. ERF1 is cleared
by Device Reset or by handling the error condition within the Temperature Measurement Function (see
Section 2.9
for further details).
0: No error occurred in Function 1.
1: Error occurred in Function 1.
ERF2 (Error Function 2)
Same as ERF1 for Function 2, Voltage-Only Measurement Function. (see
Section
2.10
for further details)
Reserved.
Will always read "0".
1
RO
3-2
4
RO
RO
5
RO
6
RO
L
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